DK2670041T3 - Power supply device with an inverter for generating N-phase alternating current - Google Patents

Power supply device with an inverter for generating N-phase alternating current Download PDF

Info

Publication number
DK2670041T3
DK2670041T3 DK12170485.2T DK12170485T DK2670041T3 DK 2670041 T3 DK2670041 T3 DK 2670041T3 DK 12170485 T DK12170485 T DK 12170485T DK 2670041 T3 DK2670041 T3 DK 2670041T3
Authority
DK
Denmark
Prior art keywords
power supply
supply device
supply arrangement
alternating current
inverter
Prior art date
Application number
DK12170485.2T
Other languages
Danish (da)
Inventor
Dr Ing Andreas Averberg
Original Assignee
Aeg Power Solutions Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aeg Power Solutions Gmbh filed Critical Aeg Power Solutions Gmbh
Application granted granted Critical
Publication of DK2670041T3 publication Critical patent/DK2670041T3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/0285—Heating or cooling the reactor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/06—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances
    • H02M5/08—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances using capacitors only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/05—Capacitor coupled rectifiers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ac-Ac Conversion (AREA)
  • Inverter Devices (AREA)
  • General Induction Heating (AREA)

Description

Description
The present invention relates to a power supply arrangement comprising an inverter for generating N-phase alternating current and at least one N-phase AC transformer having primary windings and secondary windings, wherein the primary windings are polygon-connected and, during no-load operation of the transformer, a vector sum of the voltages present at the N secondary windings becomes zero.
Such a power supply arrangement is known from the unpublished European patent application having the application number 11 174 546.9 (see Figure 1, which is taken from the application 11 174 546.9) . From the same application 11 174 546.9, it is known to use this first power supply arrangement for supplying silicon rods for producing polysilicon in accordance with the Siemens method. The first power supply arrangement depicted in the aforementioned application 11 174 546.9 has three outputs, at which voltages are provided which are offset from each other by 120°. These voltages drive medium-frequency currents having a frequency between 1 and 1000 kHz into the silicon rods. The voltages are provided by a three-phase AC transformer which has three primary windings and three secondary windings. The primary windings are delta-connected. During no-load operation of the transformer, a vector sum of the voltages present at the three secondary windings becomes zero .
The three secondary windings are connected in series and are in parallel to three outputs of the power supply arrangement. Silicon rods are connected to the outputs as loads, through which the power supply arrangement drives a current.
In addition to the power supply by the first power supply arrangements, the silicon rods, as described in the aforementioned application 11 174 546.9, may be supplied by a second power supply arrangement simultaneously to being supplied by the first power supply arrangements. The silicon rods are connected in series to this second power supply arrangement. The power supply is established via a current having a frequency of approximately 50 Hz.
In the application 11 174 546.9, it is described that the second power supply arrangement is decoupled from the first power supply arrangement in that the voltage across the series-connected outputs of the first power supply arrangements is equal to zero. US 2758144, DE 1204321, EP 2346150, and DE 1509941 are also known as related art.
However, in practice, problems may arise if the loads at the outputs of a first power supply arrangement are not equal in size. In particular, if the inductance of the one load is greater than the inductance of the other load, some quite substantial differences in the magnitudes of the voltages provided at the outputs of the first power supply arrangements may result. This would result in this sum of the voltages across the outputs of the first power supply arrangement no longer being 0 V. Instead, magnitudes of several 100 V are reached. The voltage which is reached may be a function of the frequency at which the first power supply arrangement is operated.
This unbalanced loading of the first power supply arrangement and the resulting voltage across the outputs of the first power supply arrangement connected in series may result in the second power supply arrangement being damaged or destroyed.
The object of the present invention is therefore to improve a first power supply arrangement in such a way that differences between the magnitudes of the voltages at the outputs of an initially specified first power supply arrangement are eliminated as much as possible.
This object is achieved according to the present invention in that each corner point of the polygon formed by the primary windings is connected to an outer conductor connection of the inverter via in each case one capacitor.
The capacitors connecting the corner points of the polygon to the outer conductor connections are arranged in the electrical circuit of two loads indirectly, i.e., via the insertion of the transformer, during the operation of the power supply arrangement. As a result, the capacitors are able to provide an equalization of the difference in magnitude between the voltages at the outputs of the power supply arrangement. The capacitors may have a capacitance of 4 to 6 yF, in particular 4.5 yF. The capacitors on the primary side may have a capacitance and voltage rating values which are different from the capacitors on the secondary side. Typical capacitance values for capacitors on the secondary side may range from 2 uF to 10 uF.
The outputs of the power supply arrangement are arranged in parallel with the secondary windings.
It is also advantageously possible that the outputs of the power supply arrangement are arranged in parallel with series circuits comprising in each case one of the secondary windings and one additional capacitor. Via the additional capacitors, the power supply arrangement according to the present invention, also referred to below as the first power supply arrangement, may be decoupled from a second power supply arrangement which is provided in parallel with a series connection of the outputs of the first power supply arrangement. Together with additional components, these additional capacitors form high-pass filters which prevent current driven by the second power supply arrangement which is low in frequency compared to the output currents of the first power supply arrangement from flowing into the first power supply arrangements and damaging or destroying them.
Decoupling of the first power supply arrangement from the second power supply arrangement in this way also makes it possible to reduce the voltage across all outputs of the first power supply arrangement in the event of unbalanced loading. However, the reduction is not as significant as in the case of omitting these capacitors at the outer conductor connections.
The object may also be achieved according to the present invention in that the voltage across at least N-l secondary windings is adjustable discretely or continuously. A discrete adjustability of the voltage may be achieved in that the secondary windings have multiple taps. If the voltage is adjustable across N-l secondary windings, it may be changed in such a way that the voltages across the loads connected to the power supply arrangement according to the present invention are effectively equal.
An additional object according to the present invention is that at least N-l of the capacitors in series with the secondary windings have an adjustable capacitance. Via such adjustable capacitors, it could also be achieved that the voltages across the loads connected to the power supply arrangement according to the present invention are effectively equal.
The inverter may be a bridge circuit comprising power transistors .
The power supply arrangement may comprise a frequency converter, and the inverter may be part of the frequency converter. In addition to the inverter, the frequency converter may comprise a rectifier and a DC link circuit.
Alternatively, the frequency converter may also be a direct converter. The inverter within the context of this application is then an integral part of the direct converter.
The power supply arrangement according to the present invention may be part of a reactor for producing polysilicon in accordance with the Siemens method. The power supply arrangement according to the present invention may be a first power supply arrangement for supplying alternating current to silicon rods or thin silicon rods for inductive heating. The silicon rods or thin silicon rods can be arranged in a reactor vessel. Supports are provided in the reactor vessel via which the silicon rods or thin silicon rods are supported. The supports are also electrical connections via which the silicon rods or thin silicon rods are integrated into the load circuit.
The reactor may have a second power supply arrangement for supplying alternating current to the silicon rods or thin silicon rods for inductive heating. This second power supply arrangement may include a transformer having multiple secondary-side taps and power controllers connected to them, which are operated in voltage sequence control and are connected to an outer conductor connection of an output of the second power supply arrangement, as also disclosed, for example, in Figure 1. A frequency of the alternating current that can be generated by the first power supply arrangement is 1 to 1000 Hz, and a frequency of the alternating current that can be generated by the second power supply arrangement is 1 to 100 kHz.
Additional features of the present invention will be made clear based on the following description of preferred exemplary embodiments with reference to the appended drawing.
Figure 1 shows a circuit diagram of an arrangement according to the related art made up of a first power supply arrangement and a second power supply arrangement;
Figure 2 shows a circuit diagram of a first power supply arrangement according to the present invention; and
Figure 3 shows a circuit diagram of a second power supply arrangement according to the present invention.
The arrangement according to the present invention depicted in Figure 1 comprises a first power supply arrangement VSC and a second power supply arrangement MF, which are provided together for supplying electrical energy to loads connected to the arrangement. The loads are silicon rods 3 which are mounted in a reactor for producing polysilicon via vapour deposition in accordance with the Siemens method.
Supports 7 are mounted in a reactor vessel of the reactor which, on the one hand, support the silicon rods 3 and, on the other hand, establish an electrical contact between the silicon rods 3 and electrical connections of the reactor.
The first power supply arrangement MF has an input which is connected to an outer conductor LI and a neutral conductor N of the one single-phase AC system, for example, a second power supply arrangement VSC. The first power supply arrangement MF has an AC-AC-converter 1 which is connected to the input of the second power supply arrangement MF.
The AC-AC converter 1 may be a matrix converter via which the single-phase alternating current at the input of the AC-AC converter 1 having a frequency of 50 to 60 Hz is converted into a three-phase alternating current having a frequency of 20 to 200 MHz. The AC-AC converter 1 is thus simultaneously a circuit for converting the input current into the three-phase alternating currents, and a frequency converter. The three-phase alternating currents are provided at the output of the AC-AC converter 1 via outer conductors LI', L2', L3'.
The output of the AC-AC converter 1 is connected to a three-phase AC transformer 2 whose primary windings 211, 212, 213 are delta-connected. The secondary windings 212, 222, 232 are connected to connections H", LI", L2", L3", which form outputs in pairs of the second power supply arrangements MF. The silicon rods 3 are connected to these outputs, wherein a first silicon rod 31 is connected to the connections H", LI", which form a first output, a second silicon rod 32 is connected to the connections LI", L2", which form a second output, and a third silicon rod 33 is connected to the connections L2", L3", which form a third output of the second power supply arrangement MF. Due to the phase angle of 120° between the outer conductors, there is no voltage drop between the connection H" and the connection L3" in the case of symmetrical loading by the silicon rods 31, 32, 33.
The AC-AC converter 1 is controlled by a controller 8, which is not depicted in detail.
Basically, the connections H" and L3" could be connected without affecting the second power supply arrangement MF. The secondary windings 31, 32, 33 would then be delta-connected.
However, a connection is not established between these two connections H" and L3", since it would also short-circuit the outer conductor connection LI ' ' ' and the neutral conductor connection N'1' of the second power supply arrangement VSC. However, this is not desirable.
Since there is no voltage drop between the connections H" and L3" of the second power supply arrangement MF, and there is therefore also no drop in voltage provided by the first power supply arrangement MF between the connections LI"', N'1' of the output of the second power supply arrangement VSC, the second power supply arrangement MF is unable to drive current into the first power supply arrangement VSC in the case of symmetrical loading through the silicon rods 31, 32, 33.
The second power supply arrangement VSC has an input which is connected to an outer conductor LI and a neutral conductor N of a single-phase AC system. The second power supply arrangement VSC includes a single-phase AC transformer 4 whose primary winding 41 is connected to the input of the second power supply arrangement VSC. A secondary winding 42 of the transformer 4 has four taps 421, 422, 423, 424, of which three taps 421, 422, 423 are connected to an outer conductor connection LI ' ' ' of an output of the second power supply arrangement VSC via power controllers 51, 52, 53. On the other hand, the fourth tap 424 is connected to a neutral conductor connection Ν' ' ' of the output of the second power supply arrangement VSC.
The fourth tap 424 is provided at one end of the secondary winding 42.
The power controllers 51, 52, 53 are thyristor power controllers which are formed via two anti-parallel-connected thyristors. The power controllers 51, 52, 53 are operated in a voltage sequence control.
The voltage sequence control is implemented via a controller 9, which is connected to the thyristors of the power controllers 51, 52, 53 and additional components and/or sensors to be controlled for detecting current, voltage, and the like, which is not depicted in detail.
In order to prevent feedback from the second power supply arrangement VSC to the first power supply arrangement MF, high-pass filters may be installed in the outputs of the first power supply arrangement MF, which the output voltage of the first power supply arrangement VSC is not able to pass through .
The arrangement depicted in Figure 1, in particular the first power supply arrangement MF, may be expanded in order to be able to connect more silicon rods to more outputs. For this purpose, instead of one AC-AC converter having an output for a three-phase AC system, an AC-AC converter may be used which provides an output for a multiphase AC system having more than three phases, for example, for a four-phase, five-phase, or six-phase AC system.
The first power supply arrangement could also be expanded by using two three-phase AC transformers 2 whose primary windings are connected in parallel in pairs and whose secondary windings are connected in series.
The first power supply arrangement MF provides three voltages at its output LI", L2", L3", H" which are shifted by 120° with respect to each other, which have an equal magnitude during no-load operation and under symmetrical loading of the output LI", L2", L3", H". The voltage between the connections L3", H" is then 0 V.
An asymmetric loading of the connections of the output LI", L2", L3", H" may cause the effective voltages at the connection of the output LI", L2", L3", H" to be different. The voltage between the connections L3", H" is then not 0 V. Depending on the frequency of the AC voltages at the outputs and depending on the type of load, the deviation may be of an order of magnitude which is problematic for an integration of the first power supply arrangement MF into a larger system. The AC voltages may diverge during the operation of the first power supply arrangement in particular in the case of different inductive loading. High voltages may occur between the connections L3", H", particularly in the case of operating the first power supply arrangement for providing AC voltages having frequencies which are close to the resonance frequencies of the output circuits.
According to the present invention, it is now provided to connect a capacitor Cll, C12, C13 between each of the connectors of the output of the AC-AC converter 1 and the corner points of the delta-connected primary windings 211, 212, 213. First power supply arrangements MF according to the present invention are depicted in Figures 2 and 3.
The first power supply arrangements MF depicted in Figures 2 and 3 correspond largely to the power supply arrangement MF depicted in Figure 1. Functionally identical elements and components are therefore designated by like reference numerals. The second power supply arrangement VSC is not depicted in Figure 2. However, it may be connected to the loads 31, 32, 33 in the same way as the arrangement depicted in Figure 1 and Figure 2.
Figures 2 and 3 depict the AC-AC converter 1 in greater detail. The AC-AC converter 1 is a frequency converter 1 including a rectifier 11 and a DC link circuit including a capacitor CG and an inverter 12.
The rectifier 11 is connected to an outer conductor LI and a neutral conductor N of a power supply network. The capacitor CG which forms the DC link circuit is connected to the output of the rectifier. The inverter 12 is connected to the DC link circuit.
The inverter 12 is an H bridge made up of power converter valves, in particular IGBTs 121, as is common in many inverters. Instead of IGBTs, other controllable switches may be used. Points between the power converter valves 121 of the half-bridges of the H bridge form connections of the output of the inverter 12. The capacitors Cll, C12, C13 are connected to these connections. The capacitors Cll, C12, C13 are connected to the corner points LI', L2', L3' of the delta circuit formed by the primary windings 211, 212, 213 of the three-phase AC transformer 2. The secondary-side connection of the three-phase AC transformer 2 and the loads 31, 32, 33 connected to it does not differ from the circuit depicted in Figure 1.
The voltage arising between the connections L3", H" under asymmetrical loading may be considerably reduced by the capacitors Cll, C12, C13.
The capacitors Cll, C12, C13 cause a coupling of the output circuits on the primary side, which results in a reduction of the voltage between the connections L3", H". The voltages at the connections L3", H" are equalized compared to the cases of asymmetrical loading described based on Figure 1. The voltages may be reduced by up to approximately 100%.
An almost 80% reduction of the voltage between the outer conductors may be achieved in the case of an asymmetrical loading, in particular an asymmetrical resistive-inductive loading, of the output of the first power supply arrangement MF, if capacitors C21, C22 and C23 are inserted into the connections between the secondary windings 212, 222, 232 of the transformer 2 and the connections LI", L2", L3", H", as depicted in Figure 3 for the second circuit arrangement according to the present invention, which otherwise corresponds to the first circuit arrangement according to the present invention according to Figure 2. Although these additional capacitors C21, C22 and C23 prevent the full balancing of the output voltages, it is possible to achieve a decoupling of the first power supply arrangement MF from the first power supply arrangement VSC.

Claims (7)

1. Strømforsyningsanordning (MF) med en inverter (12) til generering af N-faset vekselstrøm og mindst én N-faset vekselstrømstransformer (2) med primærviklinger (211, 212, 213) og sekundærviklinger (221, 222, 223), hvor primærviklingerne (211, 212, 213) er polygonkoblede, og hvor i transformerens (2) tomgang en sumvektor for spændingerne på N-sekundærviklingerne (221, 222, 223) bliver til nul, kendetegnet ved, - at hvert hjørnepunkt af den af primærviklingerne (211, 212, 213) dannede polygon er forbundet via i hvert enkelt tilfælde én kondensator (Cll, C12, C13) med en faseledning fra inverteren, - at spændingen via mindst N-l sekundærviklinger (221, 222, 223) kan indstilles diskret eller kontinuerligt, og/eller der i serie med sekundærviklingerne (221, 222, 223) er tilvejebragt kondensatorer, af hvilke mindst N-l har en indstillelig kapacitet.A power supply device (MF) having an inverter (12) for generating N-phase alternating current and at least one N-phase alternating current transformer (2) with primary windings (211, 212, 213) and secondary windings (221, 222, 223), wherein the primary windings (211, 212, 213) are polygon-coupled, and where in the idle of the transformer (2) a sum vector of the voltages on the N-secondary windings (221, 222, 223) becomes zero, characterized in that - every corner point of that of the primary windings (211) (212, 213) formed polygon is connected via, in each case, one capacitor (C11, C12, C13) with a phase conduit from the inverter - the voltage can be set discretely or continuously via at least N1 secondary windings (221, 222, 223) and / or in series with the secondary windings (221, 222, 223) capacitors are provided, of which at least N1 has an adjustable capacity. 2. Strømforsyningsanordning (MF) ifølge krav 1, kendetegnet ved, at strømforsyningsanordningens (MF) udgange er anbragt parallelt med sekundærviklingerne (221, 222, 223).Power supply device (MF) according to claim 1, characterized in that the outputs of the power supply device (MF) are arranged parallel to the secondary windings (221, 222, 223). 3. Strømforsyningsanordning (MF) ifølge krav 2, kendetegnet ved, at strømforsyningsanordningens (MF) udgange er anbragt parallelt med seriekoblinger fra i hvert enkelt tilfælde én af sekundærviklingerne (221, 222, 223) og i hvert enkelt tilfælde én kondensator (C21, C22, C23).Power supply device (MF) according to claim 2, characterized in that the outputs of the power supply device (MF) are arranged in parallel with series couplings from in each case one of the secondary windings (221, 222, 223) and in each case one capacitor (C21, C22 , C23). 4. Strømforsyningsanordning (MF) ifølge et af kravene 1 til 3, kendetegnet ved, at inverteren (12) er en H-bro med effekttransistorer (121).Power supply device (MF) according to one of claims 1 to 3, characterized in that the inverter (12) is an H-bridge with power transistors (121). 5. Strømforsyningsanordning (MF) ifølge et af kravene 1 til 4, kendetegnet ved, at strømforsyningsanordningen omfatter en frekvensomformer (11, 12, CG), og at inverteren (12) er en del af frekvensomformeren (11, 12, CG).Power supply device (MF) according to one of claims 1 to 4, characterized in that the power supply device comprises a frequency converter (11, 12, CG) and that the inverter (12) is part of the frequency converter (11, 12, CG). 6. Reaktor til fremstilling af polysilicium via Siemens-processen med en første strømforsyningsanordning (MF) til forsyning af siliciumstænger eller -tynde siliciumstænger, som kan anbringes i en reaktortank, med vekselstrøm til induktiv opvarmning, kendetegnet ved, at den første strømforsyningsanordning (MF) er en strømforsyningsanordning ifølge et af kravene 1 til 5.6. Reactor for the production of polysilicon via the Siemens process with a first power supply device (MF) for supplying silicon rods or thin silicon rods which can be placed in a reactor tank, with alternating current for inductive heating, characterized in that the first power supply device (MF) is a power supply device according to one of claims 1 to 5. 7. Reaktor ifølge krav 6, kendetegnet ved, at reaktoren har en anden strømforsyningsanordning (VSC) til forsyning af siliciumstængerne eller de tynde siliciumstænger med vekselstrøm til induktiv opvarmning, hvor en frekvens af den vekselstrøm, der genereres af den første strømforsyningsanordning, udgør 10 til 100 Hz, og en frekvens af den vekselstrøm, der genereres af den anden strømforsyningsanordning, udgør 10 til 1000 kHz.7. Reactor according to claim 6, characterized in that the reactor has a second power supply device (VSC) for supplying the silicon rods or thin silicon rods with inductive heating alternating current, where a frequency of the alternating current generated by the first power supply device is 10 to 100 Hz, and a frequency of the alternating current generated by the second power supply device is 10 to 1000 kHz.
DK12170485.2T 2012-06-01 2012-06-01 Power supply device with an inverter for generating N-phase alternating current DK2670041T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120170485 EP2670041B1 (en) 2012-06-01 2012-06-01 Power supply assembly with an inverter for creating N-phase alternating current

Publications (1)

Publication Number Publication Date
DK2670041T3 true DK2670041T3 (en) 2015-04-20

Family

ID=46207882

Family Applications (1)

Application Number Title Priority Date Filing Date
DK12170485.2T DK2670041T3 (en) 2012-06-01 2012-06-01 Power supply device with an inverter for generating N-phase alternating current

Country Status (11)

Country Link
US (1) US20130323137A1 (en)
EP (1) EP2670041B1 (en)
JP (1) JP2013252049A (en)
KR (1) KR20130135752A (en)
CN (1) CN103457479A (en)
CA (1) CA2816625A1 (en)
DK (1) DK2670041T3 (en)
ES (1) ES2533039T3 (en)
PL (1) PL2670041T3 (en)
RU (1) RU2013125435A (en)
TW (1) TW201401711A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2346150A1 (en) * 2010-01-14 2011-07-20 AEG Power Solutions B.V. Modular power supply assembly, in particular for polysilicon production reactors
EP2765698B1 (en) * 2013-02-06 2018-10-24 Siemens Aktiengesellschaft Assembly for igniting thin rods made of electrically conductive material, in particular thin silicon rods
DE102014007639A1 (en) * 2014-05-22 2015-11-26 AMK Arnold Müller GmbH & Co. KG System for feeding electrical energy into a power supply network
CN104953881B (en) * 2015-07-17 2018-12-25 南京矽力杰半导体技术有限公司 Driving circuit and the radio energy transmitting terminal for applying it
FR3042661B1 (en) * 2015-10-16 2017-12-08 Valeo Systemes De Controle Moteur DC / DC ISOLATED CONVERTER
EP3605813A1 (en) * 2018-07-30 2020-02-05 Fronius International GmbH Inverter with intermediate circuit protection
US11404966B2 (en) * 2020-07-02 2022-08-02 Delta Electronics, Inc. Isolated multi-phase DC/DC converter with reduced quantity of blocking capacitors
CN114132931B (en) * 2021-12-17 2023-07-04 亚洲硅业(青海)股份有限公司 Silicon core preparation method for producing polycrystalline silicon
CN116566232A (en) * 2023-06-27 2023-08-08 深圳市首航新能源股份有限公司 Level conversion circuit, inverter and energy storage system thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB726165A (en) * 1952-12-15 1955-03-16 Asea Ab Improvements in or relating to three-phase electric arc furnaces
DE1204321B (en) * 1961-12-07 1965-11-04 Licentia Gmbh Arrangement of the power conversion of three-phase arc furnaces symmetrical additional impedances in the furnace system
DE1509941C3 (en) * 1964-12-02 1973-09-27 Straehle & Hess Inhaber Karl Hess, 7261 Althengstett U-shaped guide for sliding window panes in cross-section
JP3242814B2 (en) * 1995-01-25 2001-12-25 三菱電機株式会社 Power system compensation controller
DE112006002299T5 (en) * 2005-09-01 2008-06-26 National University Corporation Saitama University Contact-free power supply device
HUP0700300A2 (en) * 2007-04-24 2008-12-29 Andras Fazakas Battery recharger circuit operated from three-phase mains
US8213199B2 (en) * 2007-11-30 2012-07-03 Alencon Acquisition Co., Llc. Multiphase grid synchronized regulated current source inverter systems
CN101588072B (en) * 2008-01-11 2011-08-31 北京博旺天成科技发展有限公司 Novel energy-saving power regulator
KR101245080B1 (en) * 2008-03-26 2013-03-19 엔페이즈 에너지, 인코포레이티드 Method and apparatus for extending zero-voltage switching range in a dc to dc converter
GB2476278A (en) * 2009-12-17 2011-06-22 Eltek Valere As Resonant circuit with transformer having three sets of windings
EP2346150A1 (en) * 2010-01-14 2011-07-20 AEG Power Solutions B.V. Modular power supply assembly, in particular for polysilicon production reactors

Also Published As

Publication number Publication date
CA2816625A1 (en) 2013-12-01
EP2670041A1 (en) 2013-12-04
JP2013252049A (en) 2013-12-12
RU2013125435A (en) 2014-12-10
PL2670041T3 (en) 2015-06-30
ES2533039T3 (en) 2015-04-07
CN103457479A (en) 2013-12-18
EP2670041B1 (en) 2014-12-31
TW201401711A (en) 2014-01-01
KR20130135752A (en) 2013-12-11
US20130323137A1 (en) 2013-12-05

Similar Documents

Publication Publication Date Title
DK2670041T3 (en) Power supply device with an inverter for generating N-phase alternating current
EP3089338A1 (en) Cascaded multilevel converter with t-type 3-level fullbridge cells and cell internal bypass function
JP6370702B2 (en) Power converter
US20150043254A1 (en) Grid feed apparatus, energy feed system and method for operating a grid feed apparatus
EP2719045B1 (en) A compensating system for medium or high voltage applications
CA2565707A1 (en) Low harmonics, polyphase converter circuit
TWI554005B (en) Uninterruptible power supply device
KR20150045462A (en) Power conversion device
US8767427B2 (en) Arrangement for power supply for a reactor for production of polysilicon with a frequency converter
US9209704B2 (en) Harmonics suppression in a power delivery device
JP6289825B2 (en) Generator excitation device and power conversion system
EP3649729A1 (en) Hybrid power converter
Foti et al. A reduced switch count, self-balanced, 13-level inverter based on a Dual T-Type configuration
EP3138189B1 (en) Discharging dc link capacitors in an npc converter
US20130323136A1 (en) Power supply arrangement with an inverter for producing a single-phase alternating current
US20170141696A1 (en) T-connected autotransformer based converter providing reduced rating for retrofit applications
JP6358111B2 (en) Series multiple inverter device
JP2003189474A (en) System linked power converter
JP5618956B2 (en) Power converter
da Silva Dias et al. Transformerless topologies for medium voltage converters
WO2017094047A1 (en) Power conversion device
EP4344036A1 (en) Active filter pre-charging for a converter with active filter cells
JP2012130210A (en) Electric power conversion apparatus
JP4328544B2 (en) Power converter
CN106411145A (en) Inversion unit of shore power system and inversion system thereof